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SN6505A - 产品图解：
SN6505A-SN6505x 用于隔离电源的低噪声 1A 变压器驱动器
SN6505A-隔离式DC/DC转换器-离线隔离型DC/DC控制器和转换器-电源管理
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TI产品 - SN6505A介绍

SN6505A - SN6505x 用于隔离电源的低噪声 1A 变压器驱动器

SN6505A是TI德州仪器公司的一款隔离式DC/DC转换器产品，SN6505A是SN6505x 用于隔离电源的低噪声 1A 变压器驱动器，本站介绍了SN6505A的封装应用图解、特点和优点、功能等，并给出了与SN6505A相关的TI元器件型号供参考。

SN6505A - SN6505x 用于隔离电源的低噪声 1A 变压器驱动器 - 隔离式DC/DC转换器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品特性
  • Push-Pull Driver for transformers
  • Wide Input Voltage Range: 2.25 V to 5.5 V
  • High Output Drive: 1 A at 5 V Supply
  • Low RON 0.25 Ω Max at 4.5 V Supply
  • Ultra-Low EMI
  • Spread Spectrum Clocking
  • Precision Internal Oscillator Options: 160 kHz (SN6505A) and 420 kHz (SN6505B)
  • Synchronization of Multiple Devices with External Clock Input
  • Slew-Rate Control
  • 1.7 A Current-Limit
  • Low Shutdown Current: <1 μA
  • Thermal Shutdown
  • Wide Temperature Range: –55°C to 125°C
  • Small 6-Pin SOT23/DBV Package
  • Soft Start to reduce In-rush current
产品应用
  • Isolated Power Supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, Low-Power LAN
  • Low-Noise Isolated USB Supplies
  • Process Control
  • Telecom Supplies
  • Radio Supplies
  • Medical Instruments
  • Distributed Supplies
  • Medical Instruments
  • Precision Instruments
  • Low-Noise Filament Supplies
产品说明

The SN6505 is a low-noise, low-EMI push-pull transformer driver, specifically designed for small form factor, isolated power supplies. It drives low-profile, center-tapped transformers from a 2.25 V to 5 V DC power supply. Ultra-low noise and EMI are achieved by slew rate control of the output switch voltage and through Spread Spectrum Clocking (SSC). The SN6505 consists of an oscillator followed by a gate drive circuit that provides the complementary output signals to drive ground-referenced N-channel power switches. The device includes two 1-A Power-MOSFET switches to ensure start-up under heavy loads. The switching clock can also be provided externally for accurate placement of switcher harmonics, or when operating with multiple transformer drivers. The internal protection features include a 1.7A current limiting, under-voltage lockout, thermal shutdown, and break-before-make circuitry. SN6505 includes a soft-start feature that prevents high inrush current during power up with large load capacitors. The SN6505 is available in a small 6-pin SOT23/DBV package. The device operation is characterized for a temperature range from –55°C to 125°C.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
SN6505ASOT23 (6 Pin)2.90 mm x 1.60 mm
SN6505B
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